According to Amazon, "kids can access hundreds of hours of fun and educational content, including ad-free radio stations and playlists, hundreds of Audible books, and a growing list of premium kid's skills".

Apart from this, Echo Spot allows users to make and receive video calls from users who either have an Echo device or the free Alexa mobile app, a feature which Amazonintroduced in February this year.

FreeTime Unlimited costs $2.99 per month or more if you're a Prime member (and more if you are not).

The Echo Dot Kids Edition starts at $80 (£57) and is available for pre-order starting on Wednesday, with a shipping date of May 9.

Amazon's focus on parental controls and kids content is critical for two reasons.

Amazon on Wednesday launched the Echo Dot Kids Edition that comes with a free two-year subscription to FreeTime Unlimited.

Alexa has also been trained to understand kid questions and speech patterns and has new answers targeted specifically at kids. Like the original Dot, the Kids Edition has a mute button, and parents can put the device in "sleep mode" to prevent it from responding to commands.

Amazon adds to the excitement of its AI-powered virtual assistant Echo with the launch of Amazon Echo Spot.

Amazon is revamping its Echo Dot speaker to entice parents with its new child-friendly Kids Edition. They've felt the devices have been conditioning their kids to be rude by not asking the assistant questions politely, instead incessantly barking at a disembodied female voice and implicitly learning that that's an acceptable way to act towards people.

Those with an Amazon Echo device in their homes have likely already exposed their children to Alexa.

You can buy the AmazonEcho here, the Echo Dot here, the Echo Spot here, and the Echo Plus here. So let's do the maths - $36 value for the FreeTime stuff (which you can get on any other Alexa device, for the record) and then the cost of the rubber casing.